SMn443 冷間圧造用鋼線

1.化学成分

表2－化学成分，単位%

鋼種記号	C	Si	Mn	P	S	Ni	Cr	Mo	Cu
SMn420	0.17 ~ 0.23	0.15 ~ 0.35	1.20 ~ 1.50	≤0.030	≤0.030	≤0.25	≤0.35	–	＜0.30
SMn433	0.30 ~ 0.36	0.15 ~ 0.35	1.20 ~ 1.50	≤0.030	≤0.030	≤0.25	≤0.35	–	＜0.30
SMn438	0.35 ~ 0.41	0.15 ~ 0.35	1.35 ~ 1.65	≤0.030	≤0.030	≤0.25	≤0.35	–	＜0.30
SMn443	0.40 ~ 0.46	0.15 ~ 0.35	1.35 ~ 1.65	≤0.030	≤0.030	≤0.25	≤0.35	–	＜0.30
SMnC420	0.17 ~ 0.23	0.15 ~ 0.35	1.20 ~ 1.50	≤0.030	≤0.030	≤0.25	0.35 ~ 0.70	–	＜0.30
SMnC443	0.40 ~ 0.46	0.15 ~ 0.35	1.35 ~ 1.65	≤0.030	≤0.030	≤0.25	0.35 ~ 0.70	–	＜0.30
SCr415	0.13 ~ 0.18	0.15 ~ 0.35	0.60 ~ 0.90	≤0.030	≤0.030	≤0.25	0.90 ~ 1.20	–	＜0.30
SCr420	0.18 ~ 0.23	0.15 ~ 0.35	0.60 ~ 0.90	≤0.030	≤0.030	≤0.25	0.90 ~ 1.20	–	＜0.30
SCr430	0.28 ~ 0.33	0.15 ~ 0.35	0.60 ~ 0.90	≤0.030	≤0.030	≤0.25	0.90 ~ 1.20	–	＜0.30
SCr435	0.33 ~ 0.38	0.15 ~ 0.35	0.60 ~ 0.90	≤0.030	≤0.030	≤0.25	0.90 ~ 1.20	–	＜0.30
SCr440	0.38 ~ 0.43	0.15 ~ 0.35	0.60 ~ 0.90	≤0.030	≤0.030	≤0.25	0.90 ~ 1.20	–	＜0.30
SCr445	0.43 ~ 0.48	0.15 ~ 0.35	0.60 ~ 0.90	≤0.030	≤0.030	≤0.25	0.90 ~ 1.20	–	＜0.30
SCM415	0.13 ~ 0.18	0.15 ~ 0.35	0.60 ~ 0.90	≤0.030	≤0.030	≤0.25	0.90 ~ 1.20	0.15 ~ 0.25	＜0.30
SCM418	0.16 ~ 0.21	0.15 ~ 0.35	0.60 ~ 0.90	≤0.030	≤0.030	≤0.25	0.90 ~ 1.20	0.15 ~ 0.25	＜0.30

鋼種記号	C	Si	Mn	P	S	Ni	Cr	Mo	Cu
SCM420	0.18 ~ 0.23	0.15 ~ 0.35	0.60 ~ 0.90	≤0.030	≤0.030	≤0.25	0.90 ~ 1.20	0.15 ~ 0.25	＜0.30
SCM421	0.17 ~ 0.23	0.15 ~ 0.35	0.70 ~ 1.00	≤0.030	≤0.030	≤0.25	0.90 ~ 1.20	0.15 ~ 0.25	＜0.30
SCM425	0.23 ~ 0.28	0.15 ~ 0.35	0.60 ~ 0.90	≤0.030	≤0.030	≤0.25	0.90 ~ 1.20	0.15 ~ 0.30	＜0.30
SCM430	0.28 ~ 0.33	0.15 ~ 0.35	0.60 ~ 0.90	≤0.030	≤0.030	≤0.25	0.90 ~ 1.20	0.15 ~ 0.30	＜0.30
SCM432	0.27 ~ 0.37	0.15 ~ 0.35	0.30 ~ 0.60	≤0.030	≤0.030	≤0.25	1.00 ~ 1.50	0.15 ~ 0.30	＜0.30
SCM435	0.33 ~ 0.38	0.15 ~ 0.35	0.60 ~ 0.90	≤0.030	≤0.030	≤0.25	0.90 ~ 1.20	0.15 ~ 0.30	＜0.30
SCM440	0.38 ~ 0.43	0.15 ~ 0.35	0.60 ~ 0.90	≤0.030	≤0.030	≤0.25	0.90 ~ 1.20	0.15 ~ 0.30	＜0.30
SCM445	0.43 ~ 0.48	0.15 ~ 0.35	0.60 ~ 0.90	≤0.030	≤0.030	≤0.25	0.90 ~ 1.20	0.15 ~ 0.30	＜0.30
SCM822	0.20 ~ 0.25	0.15 ~ 0.35	0.60 ~ 0.90	≤0.030	≤0.030	≤0.25	0.90 ~ 1.20	0.35 ~ 0.45	＜0.30
SNC236	0.32 ~ 0.40	0.15 ~ 0.35	0.50 ~ 0.80	≤0.030	≤0.030	1.00 ~ 1.50	0.50 ~ 0.90	–	＜0.30
SNC415	0.12 ~ 0.18	0.15 ~ 0.35	0.35 ~ 0.65	≤0.030	≤0.030	2.00 ~ 2.50	0.20 ~ 0.50	–	＜0.30
SNC631	0.27 ~ 0.35	0.15 ~ 0.35	0.35 ~ 0.65	≤0.030	≤0.030	2.50 ~ 3.00	0.60 ~ 1.00	–	＜0.30
SNC815	0.12 ~ 0.18	0.15 ~ 0.35	0.35 ~ 0.65	≤0.030	≤0.030	3.00 ~ 3.50	0.60 ~ 1.00	–	＜0.30
SNC836	0.32 ~ 0.40	0.15 ~ 0.35	0.35 ~ 0.65	≤0.030	≤0.030	3.00 ~ 3.50	0.60 ~ 1.00	–	＜0.30
SNCM220	0.17 ~ 0.23	0.15 ~ 0.35	0.60 ~ 0.90	≤0.030	≤0.030	0.40 ~ 0.70	0.40 ~ 0.60	0.15 ~ 0.25	＜0.30
SNCM240	0.38 ~ 0.43	0.15 ~ 0.35	0.70 ~ 1.00	≤0.030	≤0.030	0.40 ~ 0.70	0.40 ~ 0.60	0.15 ~ 0.30	＜0.30
SNCM415	0.12 ~ 0.18	0.15 ~ 0.35	0.40 ~ 0.70	≤0.030	≤0.030	1.60 ~ 2.00	0.40 ~ 0.60	0.15 ~ 0.30	＜0.30
SNCM420	0.17 ~ 0.23	0.15 ~ 0.35	0.40 ~ 0.70	≤0.030	≤0.030	1.60 ~ 2.00	0.40 ~ 0.60	0.15 ~ 0.30	＜0.30
SNCM431	0.27 ~ 0.35	0.15 ~ 0.35	0.60 ~ 0.90	≤0.030	≤0.030	1.60 ~ 2.00	0.60 ~ 1.00	0.15 ~ 0.30	＜0.30
SNCM439	0.36 ~ 0.43	0.15 ~ 0.35	0.60 ~ 0.90	≤0.030	≤0.030	1.60 ~ 2.00	0.60 ~ 1.00	0.15 ~ 0.30	≤0.30
SNCM447	0.44 ~ 0.50	0.15 ~ 0.35	0.60 ~ 0.90	≤0.030	≤0.030	1.60 ~ 2.00	0.60 ~ 1.00	0.15 ~ 0.30	≤0.30
SNCM616	0.13 ~ 0.20	0.15 ~ 0.35	0.80 ~ 1.20	≤0.030	≤0.030	2.80 ~ 3.20	1.40 ~ 1.80	0.40 ~ 0.60	≤0.30
SNCM625	0.20 ~ 0.30	0.15 ~ 0.35	0.35 ~ 0.60	≤0.030	≤0.030	3.00 ~ 3.50	1.00 ~ 1.50	0.15 ~ 0.30	≤0.30
SNCM630	0.25 ~ 0.35	0.15 ~ 0.35	0.35 ~ 0.60	≤0.030	≤0.030	2.50 ~ 3.50	2.50 ~ 3.50	0.50 ~ 0.70	≤0.30
SNCM815	0.12 ~ 0.18	0.15 ~ 0.35	0.30 ~ 0.60	≤0.030	≤0.030	4.00 ~ 4.50	0.70 ~ 1.00	0.15 ~ 0.30	≤0.30
SACM645	0.40 ~ 0.50	0.15 ~ 0.50	0.60 or less	≤0.030	≤0.030	≤0.25	1.30 ~ 1.70	0.15 ~ 0.30	≤0.30